conservation of mass Flashcards
1
Q
Why might the total mass appear to change during a chemical reaction
A
1) Gases from the air may react with the chemicals in the beaker, increasing the mass.
2) Gaseous products may escape from the beaker into the air, decreasing the mass.
2
Q
In a chemical reaction, is there any change in the overall mass of the substances?
A
No. The overall mass of the products will be exactly the same as the overall mass of the reactants
3
Q
What is the la of conservation of mass?
A
No atoms are lost or made during a chemical reaction
